./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bb463b167b254c80aafe9ad09b54a56308dc50dcf4a4adbb2aa58670e8927d0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:07:05,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:07:05,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:07:05,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:07:05,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:07:05,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:07:05,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:07:05,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:07:05,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:07:05,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:07:05,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:07:05,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:07:05,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:07:05,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:07:05,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:07:05,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:07:05,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:07:05,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:07:05,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:07:05,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:07:05,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:07:05,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:07:05,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:07:05,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:07:05,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:07:05,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:07:05,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:07:05,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:07:05,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:07:05,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:07:05,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:07:05,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:07:05,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:07:05,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:07:05,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:07:05,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:07:05,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:07:05,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:07:05,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:07:05,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:07:05,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:07:05,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:07:05,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:07:05,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:07:05,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:07:05,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:07:05,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:07:05,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:07:05,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:07:05,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:07:05,806 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:07:05,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:07:05,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:07:05,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:07:05,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:07:05,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:07:05,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:07:05,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:07:05,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:07:05,809 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:07:05,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:07:05,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:07:05,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:07:05,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:07:05,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:07:05,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:07:05,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:07:05,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:07:05,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:07:05,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:07:05,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:07:05,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:07:05,813 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:07:05,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:07:05,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:07:05,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb463b167b254c80aafe9ad09b54a56308dc50dcf4a4adbb2aa58670e8927d0 [2022-10-17 11:07:06,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:07:06,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:07:06,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:07:06,189 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:07:06,189 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:07:06,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-10-17 11:07:06,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/data/8a0005637/62b4916d28c641119cb3e205312f7b20/FLAGa20f51060 [2022-10-17 11:07:06,825 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:07:06,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-10-17 11:07:06,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/data/8a0005637/62b4916d28c641119cb3e205312f7b20/FLAGa20f51060 [2022-10-17 11:07:07,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/data/8a0005637/62b4916d28c641119cb3e205312f7b20 [2022-10-17 11:07:07,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:07:07,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:07:07,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:07:07,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:07:07,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:07:07,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e27250f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07, skipping insertion in model container [2022-10-17 11:07:07,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:07:07,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:07:07,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c[30998,31011] [2022-10-17 11:07:07,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:07:07,573 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:07:07,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c[30998,31011] [2022-10-17 11:07:07,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:07:07,754 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:07:07,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07 WrapperNode [2022-10-17 11:07:07,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:07:07,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:07:07,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:07:07,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:07:07,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,884 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1007 [2022-10-17 11:07:07,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:07:07,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:07:07,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:07:07,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:07:07,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:07,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:08,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:07:08,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:07:08,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:07:08,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:07:08,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (1/1) ... [2022-10-17 11:07:08,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:07:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:07:08,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:07:08,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cd05a91-5a2f-418e-b58f-e5cda84d8faf/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:07:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:07:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:07:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:07:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:07:08,300 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:07:08,302 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:07:09,478 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:07:09,490 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:07:09,490 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 11:07:09,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:09 BoogieIcfgContainer [2022-10-17 11:07:09,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:07:09,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:07:09,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:07:09,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:07:09,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:07:07" (1/3) ... [2022-10-17 11:07:09,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed581b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:09, skipping insertion in model container [2022-10-17 11:07:09,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:07:07" (2/3) ... [2022-10-17 11:07:09,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed581b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:07:09, skipping insertion in model container [2022-10-17 11:07:09,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:07:09" (3/3) ... [2022-10-17 11:07:09,503 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-10-17 11:07:09,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:07:09,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:07:09,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:07:09,596 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ef5bdec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:07:09,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:07:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 1.8074534161490683) internal successors, (582), 323 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 11:07:09,620 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:09,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:09,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1105173396, now seen corresponding path program 1 times [2022-10-17 11:07:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409660618] [2022-10-17 11:07:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:09,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:09,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:10,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409660618] [2022-10-17 11:07:10,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409660618] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:10,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:10,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:07:10,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082359767] [2022-10-17 11:07:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:10,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:07:10,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:07:10,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:07:10,050 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 1.8074534161490683) internal successors, (582), 323 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:10,108 INFO L93 Difference]: Finished difference Result 453 states and 802 transitions. [2022-10-17 11:07:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:07:10,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-10-17 11:07:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:10,133 INFO L225 Difference]: With dead ends: 453 [2022-10-17 11:07:10,133 INFO L226 Difference]: Without dead ends: 320 [2022-10-17 11:07:10,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:07:10,163 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:10,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-10-17 11:07:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-10-17 11:07:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.8025078369905956) internal successors, (575), 319 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 575 transitions. [2022-10-17 11:07:10,229 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 575 transitions. Word has length 77 [2022-10-17 11:07:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:10,230 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 575 transitions. [2022-10-17 11:07:10,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 575 transitions. [2022-10-17 11:07:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 11:07:10,235 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:10,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:10,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:07:10,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash 971159890, now seen corresponding path program 1 times [2022-10-17 11:07:10,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:10,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155441556] [2022-10-17 11:07:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:10,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:10,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155441556] [2022-10-17 11:07:10,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155441556] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:10,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:10,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:07:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244827749] [2022-10-17 11:07:10,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:10,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:07:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:07:10,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:10,797 INFO L87 Difference]: Start difference. First operand 320 states and 575 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:10,959 INFO L93 Difference]: Finished difference Result 448 states and 792 transitions. [2022-10-17 11:07:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:07:10,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-10-17 11:07:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:10,964 INFO L225 Difference]: With dead ends: 448 [2022-10-17 11:07:10,965 INFO L226 Difference]: Without dead ends: 320 [2022-10-17 11:07:10,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:07:10,968 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 3 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:10,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2243 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:07:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-10-17 11:07:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-10-17 11:07:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.658307210031348) internal successors, (529), 319 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 529 transitions. [2022-10-17 11:07:10,992 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 529 transitions. Word has length 77 [2022-10-17 11:07:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:10,992 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 529 transitions. [2022-10-17 11:07:10,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 529 transitions. [2022-10-17 11:07:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-10-17 11:07:10,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:11,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:11,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:07:11,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash 750751880, now seen corresponding path program 1 times [2022-10-17 11:07:11,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:11,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871649752] [2022-10-17 11:07:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:11,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:11,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:11,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871649752] [2022-10-17 11:07:11,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871649752] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:11,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:11,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:11,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655640670] [2022-10-17 11:07:11,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:11,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:11,234 INFO L87 Difference]: Start difference. First operand 320 states and 529 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:11,283 INFO L93 Difference]: Finished difference Result 556 states and 933 transitions. [2022-10-17 11:07:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:11,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-10-17 11:07:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:11,288 INFO L225 Difference]: With dead ends: 556 [2022-10-17 11:07:11,288 INFO L226 Difference]: Without dead ends: 432 [2022-10-17 11:07:11,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:11,291 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 183 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:11,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 998 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-10-17 11:07:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2022-10-17 11:07:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6643356643356644) internal successors, (714), 429 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 714 transitions. [2022-10-17 11:07:11,315 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 714 transitions. Word has length 122 [2022-10-17 11:07:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:11,316 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 714 transitions. [2022-10-17 11:07:11,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 714 transitions. [2022-10-17 11:07:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-17 11:07:11,321 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:11,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:11,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:07:11,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash -44233893, now seen corresponding path program 1 times [2022-10-17 11:07:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:11,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299033003] [2022-10-17 11:07:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:11,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:11,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299033003] [2022-10-17 11:07:11,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299033003] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:11,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:11,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:11,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200469138] [2022-10-17 11:07:11,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:11,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:11,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:11,510 INFO L87 Difference]: Start difference. First operand 430 states and 714 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:11,547 INFO L93 Difference]: Finished difference Result 878 states and 1474 transitions. [2022-10-17 11:07:11,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:11,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-10-17 11:07:11,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:11,553 INFO L225 Difference]: With dead ends: 878 [2022-10-17 11:07:11,553 INFO L226 Difference]: Without dead ends: 644 [2022-10-17 11:07:11,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:11,556 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 184 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:11,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1010 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:11,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-10-17 11:07:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2022-10-17 11:07:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.673946957878315) internal successors, (1073), 641 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1073 transitions. [2022-10-17 11:07:11,584 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1073 transitions. Word has length 125 [2022-10-17 11:07:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:11,585 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 1073 transitions. [2022-10-17 11:07:11,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1073 transitions. [2022-10-17 11:07:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-10-17 11:07:11,587 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:11,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:11,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:07:11,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash 487395088, now seen corresponding path program 1 times [2022-10-17 11:07:11,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:11,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027302277] [2022-10-17 11:07:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:11,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:11,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:11,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027302277] [2022-10-17 11:07:11,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027302277] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:11,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:11,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:11,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683089776] [2022-10-17 11:07:11,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:11,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:11,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:11,752 INFO L87 Difference]: Start difference. First operand 642 states and 1073 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:11,815 INFO L93 Difference]: Finished difference Result 1494 states and 2515 transitions. [2022-10-17 11:07:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:11,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-10-17 11:07:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:11,825 INFO L225 Difference]: With dead ends: 1494 [2022-10-17 11:07:11,825 INFO L226 Difference]: Without dead ends: 1048 [2022-10-17 11:07:11,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:11,832 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 177 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:11,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1011 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-10-17 11:07:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1046. [2022-10-17 11:07:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 1.677511961722488) internal successors, (1753), 1045 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1753 transitions. [2022-10-17 11:07:11,877 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1753 transitions. Word has length 128 [2022-10-17 11:07:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:11,878 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1753 transitions. [2022-10-17 11:07:11,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1753 transitions. [2022-10-17 11:07:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-17 11:07:11,881 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:11,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:11,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:07:11,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:11,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1255785821, now seen corresponding path program 1 times [2022-10-17 11:07:11,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:11,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60911138] [2022-10-17 11:07:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:11,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:12,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:12,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60911138] [2022-10-17 11:07:12,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60911138] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:12,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:12,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864052951] [2022-10-17 11:07:12,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:12,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:12,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:12,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:12,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:12,039 INFO L87 Difference]: Start difference. First operand 1046 states and 1753 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:12,094 INFO L93 Difference]: Finished difference Result 2666 states and 4483 transitions. [2022-10-17 11:07:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:12,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-10-17 11:07:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:12,107 INFO L225 Difference]: With dead ends: 2666 [2022-10-17 11:07:12,108 INFO L226 Difference]: Without dead ends: 1816 [2022-10-17 11:07:12,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:12,111 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 170 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:12,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1012 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2022-10-17 11:07:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1814. [2022-10-17 11:07:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 1.6751241036955322) internal successors, (3037), 1813 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 3037 transitions. [2022-10-17 11:07:12,206 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 3037 transitions. Word has length 131 [2022-10-17 11:07:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:12,207 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 3037 transitions. [2022-10-17 11:07:12,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 3037 transitions. [2022-10-17 11:07:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-17 11:07:12,210 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:12,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:12,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:07:12,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 871480728, now seen corresponding path program 1 times [2022-10-17 11:07:12,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:12,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626153838] [2022-10-17 11:07:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:12,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626153838] [2022-10-17 11:07:12,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626153838] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:12,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:12,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:07:12,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227053311] [2022-10-17 11:07:12,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:12,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:07:12,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:07:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:07:12,476 INFO L87 Difference]: Start difference. First operand 1814 states and 3037 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:13,086 INFO L93 Difference]: Finished difference Result 9350 states and 15821 transitions. [2022-10-17 11:07:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:07:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-10-17 11:07:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:13,137 INFO L225 Difference]: With dead ends: 9350 [2022-10-17 11:07:13,137 INFO L226 Difference]: Without dead ends: 7732 [2022-10-17 11:07:13,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:07:13,147 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1685 mSDsluCounter, 3840 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:13,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 4361 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:07:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7732 states. [2022-10-17 11:07:13,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 3322. [2022-10-17 11:07:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3321 states have (on average 1.6772056609454984) internal successors, (5570), 3321 states have internal predecessors, (5570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 5570 transitions. [2022-10-17 11:07:13,379 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 5570 transitions. Word has length 134 [2022-10-17 11:07:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:13,380 INFO L495 AbstractCegarLoop]: Abstraction has 3322 states and 5570 transitions. [2022-10-17 11:07:13,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 5570 transitions. [2022-10-17 11:07:13,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-17 11:07:13,384 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:13,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:13,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:07:13,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -848507773, now seen corresponding path program 1 times [2022-10-17 11:07:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:13,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9967666] [2022-10-17 11:07:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:13,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:13,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:13,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9967666] [2022-10-17 11:07:13,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9967666] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:13,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:13,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:07:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840990252] [2022-10-17 11:07:13,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:13,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:07:13,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:07:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:07:13,578 INFO L87 Difference]: Start difference. First operand 3322 states and 5570 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:13,909 INFO L93 Difference]: Finished difference Result 9692 states and 16356 transitions. [2022-10-17 11:07:13,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:07:13,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-10-17 11:07:13,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:13,956 INFO L225 Difference]: With dead ends: 9692 [2022-10-17 11:07:13,957 INFO L226 Difference]: Without dead ends: 6566 [2022-10-17 11:07:13,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:13,963 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 618 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:13,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1717 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:07:13,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2022-10-17 11:07:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 4927. [2022-10-17 11:07:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 4926 states have (on average 1.6798619569630533) internal successors, (8275), 4926 states have internal predecessors, (8275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 8275 transitions. [2022-10-17 11:07:14,306 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 8275 transitions. Word has length 135 [2022-10-17 11:07:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:14,308 INFO L495 AbstractCegarLoop]: Abstraction has 4927 states and 8275 transitions. [2022-10-17 11:07:14,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 8275 transitions. [2022-10-17 11:07:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 11:07:14,312 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:14,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:14,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:07:14,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash 942022462, now seen corresponding path program 1 times [2022-10-17 11:07:14,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:14,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867446595] [2022-10-17 11:07:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:14,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:14,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:14,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867446595] [2022-10-17 11:07:14,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867446595] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:14,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:14,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204666680] [2022-10-17 11:07:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:14,468 INFO L87 Difference]: Start difference. First operand 4927 states and 8275 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:14,805 INFO L93 Difference]: Finished difference Result 9527 states and 16015 transitions. [2022-10-17 11:07:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:14,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-10-17 11:07:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:14,860 INFO L225 Difference]: With dead ends: 9527 [2022-10-17 11:07:14,860 INFO L226 Difference]: Without dead ends: 6957 [2022-10-17 11:07:14,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:14,868 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 185 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:14,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1141 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2022-10-17 11:07:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 6955. [2022-10-17 11:07:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6955 states, 6954 states have (on average 1.674000575208513) internal successors, (11641), 6954 states have internal predecessors, (11641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6955 states to 6955 states and 11641 transitions. [2022-10-17 11:07:15,353 INFO L78 Accepts]: Start accepts. Automaton has 6955 states and 11641 transitions. Word has length 136 [2022-10-17 11:07:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:15,354 INFO L495 AbstractCegarLoop]: Abstraction has 6955 states and 11641 transitions. [2022-10-17 11:07:15,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6955 states and 11641 transitions. [2022-10-17 11:07:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 11:07:15,358 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:15,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:15,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 11:07:15,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:15,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:15,359 INFO L85 PathProgramCache]: Analyzing trace with hash -506487182, now seen corresponding path program 1 times [2022-10-17 11:07:15,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:15,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764133173] [2022-10-17 11:07:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:15,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:15,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764133173] [2022-10-17 11:07:15,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764133173] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:15,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:15,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:15,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166298979] [2022-10-17 11:07:15,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:15,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:15,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:15,516 INFO L87 Difference]: Start difference. First operand 6955 states and 11641 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:16,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:16,049 INFO L93 Difference]: Finished difference Result 13407 states and 22463 transitions. [2022-10-17 11:07:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:16,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-10-17 11:07:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:16,075 INFO L225 Difference]: With dead ends: 13407 [2022-10-17 11:07:16,075 INFO L226 Difference]: Without dead ends: 9781 [2022-10-17 11:07:16,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:16,082 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 178 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:16,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1117 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9781 states. [2022-10-17 11:07:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9781 to 9779. [2022-10-17 11:07:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9779 states, 9778 states have (on average 1.6677234608304357) internal successors, (16307), 9778 states have internal predecessors, (16307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 16307 transitions. [2022-10-17 11:07:16,628 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 16307 transitions. Word has length 136 [2022-10-17 11:07:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:16,629 INFO L495 AbstractCegarLoop]: Abstraction has 9779 states and 16307 transitions. [2022-10-17 11:07:16,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 16307 transitions. [2022-10-17 11:07:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 11:07:16,632 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:16,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:16,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 11:07:16,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:16,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:16,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2094526018, now seen corresponding path program 1 times [2022-10-17 11:07:16,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:16,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786297760] [2022-10-17 11:07:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:16,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:16,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786297760] [2022-10-17 11:07:16,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786297760] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:16,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:16,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:16,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844400055] [2022-10-17 11:07:16,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:16,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:16,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:16,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:16,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:16,760 INFO L87 Difference]: Start difference. First operand 9779 states and 16307 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:17,473 INFO L93 Difference]: Finished difference Result 18739 states and 31281 transitions. [2022-10-17 11:07:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:17,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-10-17 11:07:17,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:17,513 INFO L225 Difference]: With dead ends: 18739 [2022-10-17 11:07:17,513 INFO L226 Difference]: Without dead ends: 13643 [2022-10-17 11:07:17,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:17,526 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 171 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:17,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1093 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13643 states. [2022-10-17 11:07:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13643 to 13641. [2022-10-17 11:07:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 13640 states have (on average 1.6607771260997068) internal successors, (22653), 13640 states have internal predecessors, (22653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 22653 transitions. [2022-10-17 11:07:18,407 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 22653 transitions. Word has length 136 [2022-10-17 11:07:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:18,408 INFO L495 AbstractCegarLoop]: Abstraction has 13641 states and 22653 transitions. [2022-10-17 11:07:18,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 22653 transitions. [2022-10-17 11:07:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 11:07:18,412 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:18,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 11:07:18,414 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1835427887, now seen corresponding path program 1 times [2022-10-17 11:07:18,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:18,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905491371] [2022-10-17 11:07:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:18,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:18,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:18,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905491371] [2022-10-17 11:07:18,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905491371] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:18,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:18,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:07:18,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419478388] [2022-10-17 11:07:18,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:18,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:07:18,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:07:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:07:18,752 INFO L87 Difference]: Start difference. First operand 13641 states and 22653 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:20,335 INFO L93 Difference]: Finished difference Result 44058 states and 73290 transitions. [2022-10-17 11:07:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:07:20,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-10-17 11:07:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:20,424 INFO L225 Difference]: With dead ends: 44058 [2022-10-17 11:07:20,424 INFO L226 Difference]: Without dead ends: 30777 [2022-10-17 11:07:20,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:20,447 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 617 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:20,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1713 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:07:20,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30777 states. [2022-10-17 11:07:22,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30777 to 22155. [2022-10-17 11:07:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22155 states, 22154 states have (on average 1.6551864223165116) internal successors, (36669), 22154 states have internal predecessors, (36669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22155 states to 22155 states and 36669 transitions. [2022-10-17 11:07:22,109 INFO L78 Accepts]: Start accepts. Automaton has 22155 states and 36669 transitions. Word has length 136 [2022-10-17 11:07:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:22,109 INFO L495 AbstractCegarLoop]: Abstraction has 22155 states and 36669 transitions. [2022-10-17 11:07:22,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 22155 states and 36669 transitions. [2022-10-17 11:07:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-17 11:07:22,112 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:22,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:22,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 11:07:22,113 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1829805838, now seen corresponding path program 1 times [2022-10-17 11:07:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:22,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097107416] [2022-10-17 11:07:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:22,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:22,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097107416] [2022-10-17 11:07:22,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097107416] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:22,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:22,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:07:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136724993] [2022-10-17 11:07:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:07:22,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:07:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:22,232 INFO L87 Difference]: Start difference. First operand 22155 states and 36669 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:24,155 INFO L93 Difference]: Finished difference Result 48794 states and 81139 transitions. [2022-10-17 11:07:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:07:24,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-10-17 11:07:24,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:24,243 INFO L225 Difference]: With dead ends: 48794 [2022-10-17 11:07:24,243 INFO L226 Difference]: Without dead ends: 33280 [2022-10-17 11:07:24,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:07:24,267 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 192 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:24,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:07:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33280 states. [2022-10-17 11:07:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33280 to 33278. [2022-10-17 11:07:26,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33278 states, 33277 states have (on average 1.6503591068906451) internal successors, (54919), 33277 states have internal predecessors, (54919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33278 states to 33278 states and 54919 transitions. [2022-10-17 11:07:26,523 INFO L78 Accepts]: Start accepts. Automaton has 33278 states and 54919 transitions. Word has length 136 [2022-10-17 11:07:26,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:26,524 INFO L495 AbstractCegarLoop]: Abstraction has 33278 states and 54919 transitions. [2022-10-17 11:07:26,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 33278 states and 54919 transitions. [2022-10-17 11:07:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-10-17 11:07:26,526 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:26,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:26,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 11:07:26,527 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -692908230, now seen corresponding path program 1 times [2022-10-17 11:07:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:26,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508965696] [2022-10-17 11:07:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:26,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:26,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:26,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508965696] [2022-10-17 11:07:26,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508965696] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:26,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:26,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:07:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728747565] [2022-10-17 11:07:26,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:26,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:07:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:07:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:07:26,705 INFO L87 Difference]: Start difference. First operand 33278 states and 54919 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:07:30,142 INFO L93 Difference]: Finished difference Result 108186 states and 178737 transitions. [2022-10-17 11:07:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:07:30,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-10-17 11:07:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:07:30,362 INFO L225 Difference]: With dead ends: 108186 [2022-10-17 11:07:30,362 INFO L226 Difference]: Without dead ends: 75154 [2022-10-17 11:07:30,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:07:30,429 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 615 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:07:30,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1715 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:07:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75154 states. [2022-10-17 11:07:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75154 to 54073. [2022-10-17 11:07:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54073 states, 54072 states have (on average 1.6433459091581595) internal successors, (88859), 54072 states have internal predecessors, (88859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54073 states to 54073 states and 88859 transitions. [2022-10-17 11:07:33,205 INFO L78 Accepts]: Start accepts. Automaton has 54073 states and 88859 transitions. Word has length 137 [2022-10-17 11:07:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:07:33,206 INFO L495 AbstractCegarLoop]: Abstraction has 54073 states and 88859 transitions. [2022-10-17 11:07:33,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:07:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 54073 states and 88859 transitions. [2022-10-17 11:07:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-17 11:07:33,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:07:33,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:07:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 11:07:33,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:07:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:07:33,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1592912186, now seen corresponding path program 1 times [2022-10-17 11:07:33,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:07:33,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609043624] [2022-10-17 11:07:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:07:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:07:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:07:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:07:33,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:07:33,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609043624] [2022-10-17 11:07:33,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609043624] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:07:33,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:07:33,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:07:33,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375494404] [2022-10-17 11:07:33,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:07:33,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:07:33,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:07:33,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:07:33,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:07:33,488 INFO L87 Difference]: Start difference. First operand 54073 states and 88859 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)